Qa1 k member / hdk coilover frontend

Hello guys, I'm trying to figure everything out with my car and have a few questions. Car in question 73 duster 440. Of course I'm having issues with clearance for headers and would like to open up some space. Was looking at the gerst setup but just seeking all options. I came across the hdk torsion elimination kit, and would love to know if anyone is running the elimination kit along with the qa1 k member. So I guess some of my questions include what engine mounts would I need? Can I run power rack? If anyone has this setup I'd love some insight and feedback. Thanks